Turning to the northeast, Route 439 intersects with the southern terminus of CR 623 (South Broad Street) and enters the small community of Bayway, for which the highway is named.

Routes 1 & 9 (US 1/9) at Bayway Circle, where it changes monikers to South Elmora Avenue and continues deeper into Elizabeth.

[3] After the Bayway Circle, Route 439 continues to the northeast and into Elizabeth, where it intersects with CR 514 (Lidgerwood Avenue) and crosses the New Jersey Transit railroad line nearby.

At an intersection with Chilton Street, the highway changes monikers to North Avenue, which it retains for the remaining length.

After Route 82, the highway enters Hillside and begins the eastward progression, passing to the south of Elizabeth River Park.